<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink"
     class="reftest-wait"
     onload="setTimeAndSnapshot(2, true)">
  <script xlink:href="../smil-util.js" type="text/javascript"/>
  <!--
     If we don't detect the cycle here, we'll keep doing reverse propagation for
     a very long time. Probably long enough for something to go really wrong.
   -->
  <rect width="100" height="100" fill="green">
    <animate attributeName="y" attributeType="XML" from="100" to="100" id="a"
      begin="20h; b.begin-1s" dur="4s"/>
    <animate attributeName="fill" attributeType="CSS" id="b"
      values="red; red"
      begin="a.begin-1s" dur="2s"/>
  </rect>
</svg>
